The singer was under some heat recently after a fan's father wrote a lengthy blog post to describe their negative experience at Ariana's meet and greet recently.

"She spent perhaps 15 seconds with each of them. That is not an exaggeration. They took an approved photo with her and that was it. No small talk. No banter. No 'I can pretend I care a slight bit for you because you support me, you tweeted about me and my projects thousands of times, you buy my music, and you traveled so far, while paying for your own taxis, three days of meals, new outfits to meet me in, and federal and state taxes on this prize. Let me hear the one sentence you've always dreamed about telling me,'" he wrote.

Ariana reportedly explained in a direct message on Twitter to another fan, "A fan gave me a photo of me & my grandpa. I walked away because I didn't want them to see me start to cry. I am still in mourning and I wrote a letter to have sent to her afterward but MTV told me they had already left. My heart is still healing and it's moments like that that make it real again that he's gone...wasn't expecting it and [it] hit me like a ton of bricks."

The fan's sister, who joined her at the meet and greet, tweeted: "@ArianaGrande My sister & I were huge fans. u made @HerNamesJen extremely sad by walking away from her & telling me to delete all my pics...@ArianaGrande my sister & i sympathized with u bc we recently lost our grandpa too.. u didn't even give us a chance to tell u that :("

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Grande revealed to her fans that her grandfather lost his battle with cancer in July. The pop star took to Twitter to share the tragic news, and expressed her gratitude for those who have supported her through this difficult time.

"Thank you for your continuous love & light over the past few weeks…we did lose my favorite person to ever exist yesterday, my grandpa. If only y'all knew how amazing he was…my [heart] hurts so much. It's beyond broken but I got to hold his hand and watch him find his peace."

Grande continued, "This is the hardest thing imaginable but I'm so grateful that I got to spend time with him & my family. Taking care of him & loving him. We thank you so much for the continuous love."